APA (7th ed.) Citation

Darwin, C. (1874). Darwin, Charles Dec. 25, 1874. Zenodo.

Chicago Style (17th ed.) Citation

Darwin, Charles. Darwin, Charles Dec. 25, 1874. Zenodo, 1874.

MLA (9th ed.) Citation

Darwin, Charles. Darwin, Charles Dec. 25, 1874. Zenodo, 1874.

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